xref: /minix3/external/bsd/llvm/dist/clang/test/CodeGen/attributes.c (revision 0a6a1f1d05b60e214de2f05a7310ddd1f0e590e7) 
1f4a2713aSLionel Sambuc // RUN: %clang_cc1 -emit-llvm -triple i386-linux-gnu -o %t %s
2f4a2713aSLionel Sambuc // RUN: FileCheck --input-file=%t %s
3f4a2713aSLionel Sambuc 
4f4a2713aSLionel Sambuc // CHECK: @t5 = weak global i32 2
5f4a2713aSLionel Sambuc int t5 __attribute__((weak)) = 2;
6f4a2713aSLionel Sambuc 
7f4a2713aSLionel Sambuc // CHECK: @t13 = global %struct.s0 zeroinitializer, section "SECT"
8f4a2713aSLionel Sambuc struct s0 { int x; };
9f4a2713aSLionel Sambuc struct s0 t13 __attribute__((section("SECT"))) = { 0 };
10f4a2713aSLionel Sambuc 
11f4a2713aSLionel Sambuc // CHECK: @t14.x = internal global i32 0, section "SECT"
t14(void)12f4a2713aSLionel Sambuc void t14(void) {
13f4a2713aSLionel Sambuc   static int x __attribute__((section("SECT"))) = 0;
14f4a2713aSLionel Sambuc }
15f4a2713aSLionel Sambuc 
16f4a2713aSLionel Sambuc // CHECK: @t18 = global i32 1, align 4
17f4a2713aSLionel Sambuc extern int t18 __attribute__((weak_import));
18f4a2713aSLionel Sambuc int t18 = 1;
19f4a2713aSLionel Sambuc 
20f4a2713aSLionel Sambuc // CHECK: @t16 = extern_weak global i32
21f4a2713aSLionel Sambuc extern int t16 __attribute__((weak_import));
22f4a2713aSLionel Sambuc 
23f4a2713aSLionel Sambuc // CHECK: @t6 = common protected global i32 0
24f4a2713aSLionel Sambuc int t6 __attribute__((visibility("protected")));
25f4a2713aSLionel Sambuc 
26f4a2713aSLionel Sambuc // CHECK: @t12 = global i32 0, section "SECT"
27f4a2713aSLionel Sambuc int t12 __attribute__((section("SECT")));
28f4a2713aSLionel Sambuc 
29*0a6a1f1dSLionel Sambuc // CHECK: @t9 = weak alias bitcast (void ()* @__t8 to void (...)*)
__t8()30f4a2713aSLionel Sambuc void __t8() {}
31f4a2713aSLionel Sambuc void t9() __attribute__((weak, alias("__t8")));
32f4a2713aSLionel Sambuc 
33f4a2713aSLionel Sambuc // CHECK: declare extern_weak i32 @t15()
34f4a2713aSLionel Sambuc int __attribute__((weak_import)) t15(void);
t17()35f4a2713aSLionel Sambuc int t17() {
36f4a2713aSLionel Sambuc   return t15() + t16;
37f4a2713aSLionel Sambuc }
38f4a2713aSLionel Sambuc 
39f4a2713aSLionel Sambuc // CHECK: define void @t1() [[NR:#[0-9]+]] {
40f4a2713aSLionel Sambuc void t1() __attribute__((noreturn));
t1()41f4a2713aSLionel Sambuc void t1() { while (1) {} }
42f4a2713aSLionel Sambuc 
43f4a2713aSLionel Sambuc // CHECK: define void @t2() [[NUW:#[0-9]+]] {
44f4a2713aSLionel Sambuc void t2() __attribute__((nothrow));
t2()45f4a2713aSLionel Sambuc void t2() {}
46f4a2713aSLionel Sambuc 
47f4a2713aSLionel Sambuc // CHECK: define weak void @t3() [[NUW]] {
48f4a2713aSLionel Sambuc void t3() __attribute__((weak));
t3()49f4a2713aSLionel Sambuc void t3() {}
50f4a2713aSLionel Sambuc 
51f4a2713aSLionel Sambuc // CHECK: define hidden void @t4() [[NUW]] {
52f4a2713aSLionel Sambuc void t4() __attribute__((visibility("hidden")));
t4()53f4a2713aSLionel Sambuc void t4() {}
54f4a2713aSLionel Sambuc 
55f4a2713aSLionel Sambuc // CHECK: define void @t7() [[NR]] {
56f4a2713aSLionel Sambuc void t7() __attribute__((noreturn, nothrow));
t7()57f4a2713aSLionel Sambuc void t7() { while (1) {} }
58f4a2713aSLionel Sambuc 
59f4a2713aSLionel Sambuc // CHECK: define void @t10() [[NUW]] section "SECT" {
60f4a2713aSLionel Sambuc void t10(void) __attribute__((section("SECT")));
t10(void)61f4a2713aSLionel Sambuc void t10(void) {}
62f4a2713aSLionel Sambuc // CHECK: define void @t11() [[NUW]] section "SECT" {
t11(void)63f4a2713aSLionel Sambuc void __attribute__((section("SECT"))) t11(void) {}
64f4a2713aSLionel Sambuc 
65f4a2713aSLionel Sambuc // CHECK: define i32 @t19() [[NUW]] {
66f4a2713aSLionel Sambuc extern int t19(void) __attribute__((weak_import));
t19(void)67f4a2713aSLionel Sambuc int t19(void) {
68f4a2713aSLionel Sambuc   return 10;
69f4a2713aSLionel Sambuc }
70f4a2713aSLionel Sambuc 
71f4a2713aSLionel Sambuc // CHECK:define void @t20() [[NUW]] {
72f4a2713aSLionel Sambuc // CHECK: call void @abort()
73f4a2713aSLionel Sambuc // CHECK-NEXT: unreachable
t20(void)74f4a2713aSLionel Sambuc void t20(void) {
75f4a2713aSLionel Sambuc   __builtin_abort();
76f4a2713aSLionel Sambuc }
77f4a2713aSLionel Sambuc 
78f4a2713aSLionel Sambuc void (__attribute__((fastcall)) *fptr)(int);
t21(void)79f4a2713aSLionel Sambuc void t21(void) {
80f4a2713aSLionel Sambuc   fptr(10);
81f4a2713aSLionel Sambuc }
82f4a2713aSLionel Sambuc // CHECK: [[FPTRVAR:%[a-z0-9]+]] = load void (i32)** @fptr
83f4a2713aSLionel Sambuc // CHECK-NEXT: call x86_fastcallcc void [[FPTRVAR]](i32 inreg 10)
84f4a2713aSLionel Sambuc 
85f4a2713aSLionel Sambuc 
86f4a2713aSLionel Sambuc // PR9356: We might want to err on this, but for now at least make sure we
87f4a2713aSLionel Sambuc // use the section in the definition.
88f4a2713aSLionel Sambuc void __attribute__((section(".foo"))) t22(void);
t22(void)89f4a2713aSLionel Sambuc void __attribute__((section(".bar"))) t22(void) {}
90f4a2713aSLionel Sambuc 
91f4a2713aSLionel Sambuc // CHECK: define void @t22() [[NUW]] section ".bar"
92f4a2713aSLionel Sambuc 
93f4a2713aSLionel Sambuc // CHECK: attributes [[NUW]] = { nounwind{{.*}} }
94f4a2713aSLionel Sambuc // CHECK: attributes [[NR]] = { noreturn nounwind{{.*}} }
95